Pulverizing mill



D'. v. SHEHBAN. PULVERIZ'ING, MILL,

APPLICATION FILED JAN. 9, I922.

Patented Oct. 241, 11922.

lA33/i8f JNVETUH till ll litetiteii FUIiWiiililtm iilceiticm filciiJensen 9,

Csnton, in the county of time anti. @tete of @1110 have inventedcei'teiii new fill improvements in Pulvei'ising 1,, which theitelicwiiig is e. specificeticm My intention ceiisists iii? animpicvemeiit: 1n crushing machines (is mills test the pucfrom theinterior ct the drum, IHQEMXS icii' protecting such screen by an outerliminsiy screen, and mesiis between Minei: end eutcii' screen or shieldfor peeitively eliminating and. :retui'isiieg to the (ii-um anyparticles requiring further crushing The machine is celestmcteci andadapted t0 crate in :i manner sciiiewliet simiisz' in that of mycc-pending sppliceticn Serial lie. 5241,5242.

In the drawings,

Fig. .1 is e View in longitudinal secticn, showing the grinding endscreening mechanism of the mill as essembied;

Fig. 2 is at cross secticn en the line illill of Fig. 1.

Fig. 3 is e; detail View sncw'iiig ii e02 nectien with :1 section fan] IThe main operative member 0:5? the til'ilslb ing apparatus censists cf arotatable (ii-um or tumbling bei'rei 2, i11i-3 0i" emis of whichsire-mounted in suitable beeriii 9--9 by means of the iieliew trunnion itensions t ll. The receiving cntl of tee drum communicates through oneelf sziiii trunnion extensions with a supply pipe 01 inlet conduit 5, towhich lump cost is livereei from any available source With suitableamount of eir.

The ctliei." heaol is si'milsri gr Bimini/(Ki by its trunnion t it] theopposite bearing 9 enci communicates tl'n'ciigli the said trunnion witha, sucticii Oi exhaust fan A ccimecteci by its inlet ceiiduit with thetei'mimil 10 adapted to collect the dust siici pulverized particles aspreiiuceci, to i' iem mricusly siiitslile' sizes suiti'ibie deiiveiyconduit tc ether pciiii- Centrally iiiand re-tiitelily l]. is the d i"eiliemtily sci iii a 'turniice ci' l-i'isuiiipticn 0i storage feilwithin the drum 53 i with it as by cc ceimectet i i n twe n oi sinelcin,

iiig iiiiiet iiiterve mg; ennulsir epeniiigs it i lump cent. and sic tothe inter 31c, as indicated "by the HALWJWS. Wiiiliiii the shield 155,fiUnCGHttTiQ therewith s ct Sliiilimlb" t elly' CU EEXtt'BIGSiVt: its cpei 'e leis 's the screening c fie pitwi pe fetsticns or ice icitielslats Elli to prevent p cage intc tee-let ct"? eil meteriei except thetsi fine fer use.

The cuter screen icl iii 3 is 1' V series cf lciigitiitii itiiitiiigiimit tie entice 0f the Si:

. 'll'i@ll cl isrgi'eir si e. 1 l iii encl tile ceiitifzii COfltifliiiiiterscseel s cctitimieii m ethein, a

the epen tc time (iTUZ-l it,

The iii-um crushing cells Tied around Witiitlie grind the cczil by ticnthe scribed in my ep' iii 10 iiesi ieil sissy spec iii-listing mills incoperated i The outer :msde es single seiy strength against the impsct e;of ceei, While p the interior ii penying supporting c with the i11erscreen in s single piece. The inner screen it me y be cem eiiientlymerle 0;? sheet metsl, Wire netting, er ctiieisuitable infirteriei.

The ccnstiwieticn readily ui ierstw tilt} 'lfccegc P .ciihe'riil 11ciecieteii from msciunc when supplied Willi coal and proner suezicompound sepuruti K screen uo'usiutiug of lion and eeeonipanyiig airmppl roan. inner and {in outer so wing: wall with Embed at the prop'erspeed will effect rapid an intervening spiral conveyor. and tl'ioroughcrushing of t 1e coal,

a. 1n coinbinziiion with u rotuluhle drum siinuli'zaneous withdrawal.and l inin-utinby provided with an inle'ii conduit at one end suction ofthe a 'iiilzible pulverized material and :1 outlet conduit at the otheru runcenas produced. The sepurzilion and return of trieally arrangedeonlj'iound ser e iing nienlunduly large pareicles and their FE-cllislbher communicating with the outlet conduit ing or grinding iscoi'itinuons and autoand er nding toward the inlet conduit. eun- -winutic. The machine itself is strong and Sisting of an outer'ierlorutiul Shield an indurable, economical of manufacture and 0pnerperforated shield, and, un inlervening oration, and will inainiaiu itsefficiency lur- Spiriil conveyor adapted to return surplus inn; aprolonged rnn. muterul to the interior of the drum.

It may be made in various ewes gzznge of 6. in combinutioru s; rotatabledrum provzirionsly changed. or viclel with encln'iosi; hollow trunnionsand in- 15 Screening openings W smiled ineehrinlr hue; all tenorrolling; grinding; elemenis, :1 supply modif ed by the such changes areto be considered Within Connection for llllll'oi l hwllll' ruwinutieiiul ihe scope of the fuller-lung ClZLl'iilS. slnough linetrunnion in the inlet; and of the What i claim is: drum an air suctionconduit for ren'iovnw l. A grinding mill eonsinliz'ig 0'? a rotapulverized material through the trunnion table drum provided "withgrinding balls, from the delivery end of ill: drunh u cenmeans forinlroiiueing initei'iui in be upi'rull dryliiulricul perforated 126F001:er'uited upon. suction deli conduit, and eonin'iuniealing with Elliedelivery trunnion a compound. sepuru ingscre consisting; of andextending axially towards the inlet, end an inner screen nommunicakingdirectly Willi and outer surrounding )reteuling per: 7 the outletconduit and an outer surronmling foru cml screen embracing said asT4501! extendsereening Willi. in; from one end of the drum to the olher2. A grinning mi eonsis oi a rotu- 2.111 liming clearance openii 5:; forraw mm i'Luble drum pioijiilei'l Willi inding hulls, lei" z 2 the inletemi. means for introducing nuilleilul to he 0 '7. l erated upon, suctiondel /Ly conduit. an YlLl-Sil wii'h enilniosi hollow irunnions andininner screen connected W l and i itending er )r rolling grinding;elements u supply inwardly from the ontlel; conduit and an ('uiiniswiionlei" llll l' li'llfililil run lllfilifzl'lill. oufier screen surroundingthe '1 or screen ugi h the Lrun imi to the inlet cnil oi the neumliinulion. u rot-unable (lllllll pro- 30 uncl provided. withclearance o for drum, un air sum; conduit for removing 3 infirooluctionof raw material to the drum pulverized miller-nil l'liroi gl]. trunnionfrom 3. A grinding null. (f'OYlSlStlil of :1 ref table drnn providedwill means for introducing um.

41o eratecl upon a suction delivery conduit,

cylindrical screen connected Willi ihe deliver end he cli uni, centrally211- rung'ed (ii-'llllt'll'lflll ixel'ioi'aiiell screen (.0111-i'nunicuiiix i fh the delivery trunnion'und er-ilei'icli towurcl: "lieinlet emli an outer 1 pi'eieciin g penlorulml extemlii'lg invurclly fromlie outlet r1 server: euiln'tim X-l l screen exleullii'lg from tint, and[in outer vizipered SUI' one enu the (iilllll he otlwr and himifiheinner sci n and provided Will'i. ing: (Julianne up; for ruw lllJl/C lJ'LEVLCE; opening, for lll 'lifillhflilfin of ran; the inlet en lMei-veiling sfliliii .iter ail lo the lllllll rn perilous oi inmoi Agrinding mill consisting of u roh-za of the drum.-

i L; is 101* mtroducn materia to

